NO1 S3 Smart Watch Phone - 1.22 Inch Screen, MTK2502, SIM Card Support, SD Card Support, Android + iOS App (Gold) The NO.1 S3 comes with a nice 1.22 inch screen and will keep you updated throughout the day with helpful notifications. Compatible with both Android and iOS platforms, it will make a great companion to your smartphone. With Bluetooth 4.0 support, the communication between the two devices will be seamless and fast, and you will have instant updates about your messages (Android) and calls. The S3 comes with a nice set of lifestyle features to make your everyday life healthier and more convenient. To stay in shape, you will have a pedometer, a heart rate monitor and a sedentary reminder. The 3 features will make sure you have enough exercise, know how it affects your body and never stay too long behind a desk. Whats more, with the NO.1 S3 smart watch you will be able to trigger your camera remotely - for all those great selfies - and make sure your valuables are by your side with the anti-lost function. The small watch comes with a 350mAh battery and has up to 24 hours of usage time with Bluetooth on. If you disable the function and use the watch for its original function, you will have yourself 5 days worth of battery life. A notable highlight of the NO.1 S3 smartwatch is that is comes with a SIM card slot. So, you can now make calls directly from the watch - a great way to get quick updates without reaching for your smartphone. You will have 2G network support: GSM: 850/900/1800/1900, and wearing the watch on your wrist means that you are instantly connected to the world. The watch also comes with an SD card slot, giving you full access to 16GB of external memory.With the MTK2502 processor, you will experience zero lagging and your interaction with the device will be quick and easy.